Properties of the Number 90250

Ninety Thousand Two Hundred Fifty

Basics

Value: 90249 → 90250 → 90251

Parity: even

Prime: No

Previous Prime: 90247

Next Prime: 90263

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 ³ × 19 ²

Divisors: 1, 2, 5, 10, 19, 25, 38, 50, 95, 125

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110000010001010

Octal: 260212

Duodecimal: 4428A

Hexadecimal: 1608a

Square: 8145062500

Square Root: 300.416377715996

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = n²*(n*(4·n + 3) + 3·n*(-1)ⁿ - 4)/96. A302758

Numbers m such that σ(σ(m))/m is a square. A318084

The Wiener index of the straight pentachain of n pentagonal rings (see Fig. 2.1 in the A. A. Ali et al. reference). A224459

Expansion of ∑_k>=1 (-1 + ∏_j>=1 (1 + x^k·j)/(1 - x^k·j)). A320942

Wendt determinant of n-th circulant matrix C(n). A48954

a(n) = n!*∑_k=1..n μ(k)/k, where μ(k) is the Möbius function. A68337

Least multiple of n such that deleting the first r most significant digits yields a number divisible by n-r, for r = 0 to n-2. A90250